After the Anschluss of Austria to Nazi-governed Germany in 1938, he emigrated first to Britain, then to the United States. Reinhardt opened the Reinhardt School of the Theatre in Hollywood, on Sunset Boulevard. Several notable stars of the day received classical theater training, among them actress Nanette Fabray. In 1940 he became a naturalized citizen of the United States. At that time, he was married to his second wife, actress Helene Thimig, daughter of actor Hugo Thimig.

Max Reinhardt signing a contract with the US film producer Curtis Melnitz in Berlin, 1930

Compared with most of his contemporaries, Reinhardt was more interested in film than in theater. He made films as a director and from time to time also as a producer. His first staging was the film Sumurûn in 1910. After that, Reinhardt founded his own film company. He sold the film rights for the film adaptation of the play Das Mirakel (English: The Miracle) to Joseph Menchen, whose full-colour 1912 film of The Miracle gained world-wide success. Controversies around the staging of Das Mirakel, which was shown in the Vienna Rotunde in 1912, led to Reinhardt's retreat from the project. The author of the play, Reinhardt's friend and confidant Karl Gustav Vollmoeller, had French director Michel Carré finish the shooting.

Reinhardt made two films, Die Insel der Seligen (Isle of the Blessed) and Eine venezianische Nacht (Venetian Nights), under a 4-picture contract for the German film producer Paul Davidson. Released in 1913 and 1914, respectively, both films received negative reviews from the press and public. The other two films called for in the contract were never made.[1]

Both films demanded much of cameraman Karl Freund because of Reinhardt's special shooting needs, such as filming a lagoon in moonlight. Isle of the Blessed attracted attention due to its erotic nature. Its ancient mythical setting included sea gods, nymphs, and fauns, and the actors appeared naked. However, the film also fit the strict customs of the time of the late German resp. Austrian monarchy. The actors had to live up to the demands of double roles. Wilhelm Diegelmann and Willy Prager played the bourgeois fathers as well as the sea gods, Ernst Matray a bachelor and a faun, Leopoldine Konstantin the Circe. The shooting for Eine venezianische Nacht by Karl Gustav Vollmoeller took place in Venice. Maria Carmi played the bride, Alfred Abel the young stranger, and Ernst Matray Anselmus and Pipistrello. The shooting was disturbed by a fanatic who incited the attendant Venetians against the German-speaking staff.